1. Other

Guy I may refer to:

• Guy I of Albon (c. 1000–1070)
• Guy I of Clermont (c. 1255 – 1302), Marshal of France, Seigneur (Lord) of Offemont
• Guy I, Count of Blois (died 1342)
• Guy I of Jebail, of the Embriaco family
• Guy I of Luxembourg, Count of Ligny (1340–1371)
• Guy I of Montlhéry (died 1095)
• Guy I of Ponthieu (died 1100)
• Guy I de la Roche (1205–1263), Duke of Athens
• Guy I of Spoleto (died 860)

Other

• Guy #1, a character in We Like Sportz by The Lonely Island

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